1978 Johnson 2HP outboards Service Manual, Page 10Get this manual
CLEA"RANCE CHART
Power head Piston ring gap .025 max- .015 min(0.640.38 mm) Piston ringgroove 0040 max- .0020 min(0.1020.051 mm) Cylinder and piston 0055 max- .0043 min (0r.t90.109 mm) Crankshaft 4 Upper Needle bearing Lower Needle bearing Connecting rod Piston end .0011 max- .0004 min(0.0280.010 mm) Crankshaft end Needle bearing Lower unit Driveshaft and bushing in gear case .0028 max- .0010 min(0.0710.025 mm) Gearcase head and propeller shaft .0022 max- .0007 min(0.0590.018 mm) Propeller on shaft .0057 max- .0032 min(0.1450.081 mm) Gearcase bushing to propeller shaft.0022 max- .0007 min(0.0590.018 mm)
TORQUE CHART
SAFETY WARNING